Waterproofness testing apparatus and humidity testing method

Abstract

This invention discloses a waterproof testing device and a humidity testing method, relating to the field of waterproof testing technology. The waterproof testing device includes a testing chamber, a vacuum structure, and a stage mechanism. The testing chamber has an air intake nozzle and a detection chamber, which are connected. The detection chamber is equipped with a humidity sensor. The vacuum extraction port of the vacuum structure is connected to the detection chamber. The stage mechanism includes a mounting base, a first heating component, and a driving component. The mounting base is used to fix the humidity test piece. The first heating component is disposed on the mounting base and used to heat the humidity test piece. The driving component is drivenly connected to the mounting base to drive the humidity test piece to move closer to or away from the air intake nozzle, so that the air outlet of the humidity test piece aligns with the air intake nozzle. The technical solution provided by this invention can improve the accuracy and reliability of the test data.

Description

Technical Field

[0001] This invention relates to the field of waterproof testing technology, and in particular to a waterproof testing device and a humidity testing method. Background Technology

[0002] In waterproof testing equipment, accurate monitoring of humidity within the testing chamber is often necessary to assess its waterproof sealing performance. Precise monitoring of humidity within the testing chamber is a core indicator for evaluating the sealing performance of the test piece. However, existing equipment is generally limited by interference from residual gas within the testing channel and airtightness defects at the air intake, leading to a contaminated testing environment that severely impacts the accuracy and reliability of the test data. Summary of the Invention

[0003] The main objective of this invention is to provide a waterproof testing device and a humidity testing method, aiming to improve the accuracy and reliability of the test data.

[0004] To achieve the above objectives, the present invention proposes a waterproof testing device for testing the humidity of a test specimen, comprising: The test chamber is equipped with an air intake nozzle and a detection chamber, the air intake nozzle and the detection chamber are connected, and the detection chamber is equipped with a humidity sensor; A vacuum structure, wherein the vacuum extraction port of the vacuum structure is connected to the detection chamber; and A stage mechanism includes a mounting base, a first heating component, and a driving component. The mounting base is used to fix the humidity test piece. The first heating component is disposed on the mounting base and is used to heat the humidity test piece. The driving component is drivenly connected to the mounting base to drive the humidity test piece to move closer to or away from the air inlet so that the air outlet of the humidity test piece aligns with the air inlet.

[0005] In one embodiment, the waterproof test further includes a second heating component for heating the test chamber.

[0006] In one embodiment, the walls of the test chamber are made of copper.

[0007] In one embodiment, the detection chamber includes an air inlet section and a detection section that are connected to each other; the waterproof testing device further includes a first control valve, which is used to close or open the connection between the air inlet section and the detection section; and / or The waterproof testing equipment also includes a second control valve, which is used to close or open the connection between the vacuum extraction port and the testing section.

[0008] In one embodiment, the width w of the detection cavity is in the range of 1mm ≤ w ≤ 4mm.

[0009] In one embodiment, the heating range of the first heating component is 50°C-75°C.

[0010] In one embodiment, a vacuum sensor is also provided inside the detection chamber.

[0011] In one embodiment, the waterproof testing equipment further includes a first protective shell and a second protective shell, the first protective shell being used to cover the test chamber and the vacuum structure, and the second protective shell being used to cover the platform mechanism.

[0012] In one embodiment, the humidity test piece has a first sidewall with the air outlet, and the platform mechanism further includes a simulated plug disposed on the mounting base. The simulated plug has a sealing sidewall with the same shape as the first sidewall, and the sealing sidewall is used to close the air intake.

[0013] The present invention also proposes a humidity testing method, characterized in that the humidity detection method is applied to the above-mentioned waterproof testing equipment, and the humidity testing method includes: S1: Close the suction nozzle and turn on the vacuum structure to evacuate the test chamber; S2: Heat the mounting base and test chamber to the preset temperature; S3: Install the humidity test specimen into the mounting slot and heat it to the preset temperature; S4: Open the air intake and use the humidity sensor to detect humidity.

[0014] The technical solution of this invention constructs a high-precision humidity detection environment by integrating a vacuum structure, a test chamber, and a stage mechanism. Before testing, the vacuum structure extracts residual gas from the detection chamber, effectively eliminating interference from residual gas. During testing, a first heating component mounted on the mounting base heats the humidity test piece, causing the moisture inside the material to rapidly vaporize and be drawn into the detection chamber through the suction nozzle under vacuum negative pressure, where it is detected by the humidity sensor. Specifically, the driving component can drive the mounting base and the humidity test piece towards the suction nozzle for precise alignment. Since trace gas detection requires extremely high airtightness, manual operation not only results in uneven force application but also makes it difficult to guarantee sealing stability, easily introducing test errors. The automated alignment mechanism of this solution ensures consistent sealing for each test, fundamentally eliminating random errors caused by human operation, thereby significantly improving the comparability and repeatability of test results between different batches and different operators. In summary, this application, through the technical path of "negative pressure interference removal—heating evaporation—automatic alignment—precise sensing," significantly improves the accuracy and reliability of humidity detection results. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of the waterproof testing equipment provided by the present invention; Figure 2 for Figure 1 A first cross-sectional structural schematic diagram of a portion of the provided waterproofing testing equipment; Figure 3 for Figure 2 A second sectional view of a portion of the provided waterproofing testing equipment; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 for Figure 1 A third sectional view of a portion of the provided waterproofing testing equipment; Figure 6 for Figure 5 A magnified view of a section at point B in the middle; Figure 7 for Figure 5 A magnified view of a section at point C; Figure 8 for Figure 1 A schematic diagram of the test chamber and vacuum structure of the provided waterproof testing equipment; Figure 9 for Figure 8 A cross-sectional structural diagram of the provided waterproofing testing equipment; Figure 10 for Figure 9 A magnified view of a section at point D; Figure 11 for Figure 1 A first-person view structural diagram of the platform mechanism of the provided waterproof testing equipment; Figure 12 for Figure 1 A second-view structural schematic diagram of the platform mechanism of the provided waterproofing testing equipment.

[0017] Explanation of icon numbers: 100. Test chamber; 110. Inlet nozzle; 111. Groove; 112. Inlet port; 120. Detection chamber; 121. Inlet section; 121a. First connecting port; 122. Detection section; 122a. Second connecting port; 122b. Third connecting port; 123. Extraction section; 123a. Fourth connecting port; 130. Inlet control chamber; 140. Vacuum control chamber; 150. Second heating assembly; 160. First protective shell; 170. Second protective shell; 200. Platform mechanism; 210. Mounting base; 211. Circumferential limiting component; 211a. Limiting groove; 211b. Through port; 212. Base plate; 213. Support frame; 213a. Vent; 220. Drive assembly ; 221. Up-down drive structure; 222. Front-back drive structure; 230. Simulated plug; 231. Simulated sidewall; 240. First heating component; 300. Control valve assembly; 310. First control valve; 311. First drive component; 312. First seal; 312a. First push rod; 312b. First sealing gasket; 313. First sealing ring; 314. First floating joint; 320. Second control valve; 321. Second drive component; 322. Second seal; 322a. Second push rod; 322b. Second sealing gasket; 323. Second sealing ring; 324. Second floating joint; 400. Humidity sensor; 500. Vacuum sensor; 600. Vacuum structure.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0022] This invention proposes a waterproof testing device.

[0023] Please see Figures 2 to 4 In one embodiment of the present invention, the waterproof testing device is used to test the humidity of a test piece. The waterproof testing device includes a test chamber 100, a vacuum structure 600, and a stage mechanism 200. The test chamber 100 is provided with a suction nozzle 110 and a detection chamber 120, which are connected. The detection chamber 120 is provided with a humidity sensor 400. The vacuum port of the vacuum structure 600 is connected to the detection chamber 120. The stage mechanism... 200 includes a mounting base 210, a first heating component 240, and a driving component 220. The mounting base 210 is used to fix the humidity test piece. The first heating component 240 is disposed on the mounting base 210 and is used to heat the humidity test piece. The driving component 220 is drivenly connected to the mounting base 210 to drive the humidity test piece to move closer to or away from the air intake 110 so that the air outlet of the humidity test piece aligns with the air intake 110.

[0024] The technical solution of this invention constructs a high-precision humidity detection environment by integrating a vacuum structure 600, a test chamber 100, and a stage mechanism 200. Before testing, the vacuum structure 600 extracts residual gas from the detection chamber 120, effectively eliminating interference from residual gas in the detection chamber 120. During testing, the first heating component 240, located on the mounting base 210, heats the humidity test piece, causing the moisture inside the material to rapidly vaporize and be drawn into the detection chamber 120 through the suction nozzle 110 under vacuum negative pressure, where it is detected by the humidity sensor 400. In particular, the driving component 220 can drive the mounting base 210 and the humidity test piece to move toward the suction nozzle 110 and achieve precise docking. Because trace gas detection requires extremely high airtightness, manual operation not only results in uneven force application but also makes it difficult to ensure sealing stability, easily introducing test errors. The automated docking mechanism of this solution ensures consistent sealing in every test, fundamentally eliminating random errors caused by human operation, thereby significantly improving the comparability and repeatability of test results between different batches and different operators. In summary, this application, through the technical path of "negative pressure interference removal—heating to promote evaporation—automatic docking—precise sensing," greatly improves the accuracy and reliability of humidity detection results.

[0025] Secondly, the technical solution of this invention actively heats the humidity test piece by integrating a first heating component 240 into the mounting base 210, which accelerates the vaporization of any liquid water that may be present inside and allows it to escape through the outlet. Compared to traditional methods that rely solely on the environment or natural evaporation within the humidity test piece, or methods that involve heating before evacuation, this solution enables faster and more effective humidity detection, significantly improving the reliability of the test results. Furthermore, the driving component 220 precisely and controllably drives the mounting base 210 (and the fixed humidity test piece) towards the fixed suction nozzle 110. This mechanically driven docking method ensures that the outlet of the humidity test piece and the suction nozzle 110 are docked at a constant position and pressure during each test, guaranteeing consistent test conditions and thus ensuring comparable and highly repeatable test results.

[0026] It should be noted that, in the application scenario of this invention, the humidity test piece can specifically be various electronic devices or components with sealing requirements, such as, but not limited to, smartwatches, mobile phones, and portable speakers. These devices typically have functional openings for sound transmission, heat dissipation, or pressure balancing, such as sound outlets, heat dissipation holes, and microphone holes. In this technical solution, these functional openings correspond to the "air outlet" of the humidity test piece. The waterproof testing device provided by this invention aims to detect the waterproof performance of the device's casing or sealing structure by connecting and sealing the air inlet 110 with the aforementioned air outlet. This application uses a smartwatch as an example to illustrate the humidity test piece.

[0027] Reference Figure 5 and Figure 7 In this embodiment, the mounting base 210 includes a base plate 212 and a circumferential limiting member 211 disposed on the base plate 212. The circumferential limiting member 211 has a limiting hole to form a limiting groove 211a between the base plate 212 and the hole wall of the limiting hole. The side wall of the limiting hole has an opening 211b. The limiting groove 211a is used for installing the humidity test piece. The air intake nozzle 110 connects to the air outlet through the opening 211b. The limiting groove 211a is formed by the base plate 212 and the hole wall of the limiting hole, and is usually an open structure at the top or side. This design allows operators to easily put in or take out the humidity test piece, and facilitates observation of whether the test piece is installed in place, improving operational efficiency and convenience. Secondly, the through-hole 211b is directly set on the side wall of the limiting hole, allowing the suction nozzle 110 to precisely align with the air outlet (such as the sound outlet) of the test piece via the shortest path and in a straight line. This design minimizes the bends and volume of the airflow channel, facilitating the rapid establishment of a stable air path and improving the response speed and accuracy of the test. Furthermore, the mounting base 210 employs a combination of a base plate 212 and a circumferentially shaped limiting member 211, forming a modular design. By replacing the circumferential limiting member 211 with different sizes or shapes of "limiting holes," different models and sizes of test pieces can be quickly adapted. Simultaneously, the modular structure facilitates the processing, replacement, and maintenance of individual components. Of course, this solution is not limited to this; in other embodiments, the mounting base 210 may include a mounting plate, on which the limiting groove 211a is directly cut.

[0028] Optionally, the base plate 212 is made of a thermally conductive material, and the first heating component 240 is located at the bottom of the base plate 212, with the hot end of the first heating component 240 in contact with the base plate 212. It can be understood that using a thermally conductive material (such as aluminum alloy or copper) as the base plate 212 serves as the core for heat conduction, rapidly and directly transferring the heat generated by the first heating component 240 to the humidity test piece in contact with it. This direct contact heat transfer path is short, has low thermal resistance, and minimal heat loss, greatly improving heating efficiency and shortening the preheating preparation time before testing. Furthermore, integrating the first heating component 240 into the bottom of the base plate 212 makes the entire first heating component 240 structure compact, without occupying additional equipment space. Simultaneously, the thermally conductive base plate 212 helps to quickly respond to power changes in the first heating component 240, and combined with a temperature sensor (usually requiring an additional sensor), it can more accurately achieve closed-loop temperature control, maintaining the constant temperature conditions required for testing. Of course, this solution is not limited to this. In other embodiments, the first heating component 240 can be disposed on the side of the mounting base 210, and the heat can be transferred to the base plate 212 and / or the circumferential limiting member 211 by using the heat conduction structure, and then transferred to the humidity test piece.

[0029] In this embodiment, the base plate 212 is made of aluminum alloy, which has a significantly higher thermal conductivity than ordinary steel. This ensures that the heat from the first heating component 240 can be quickly and evenly conducted to the entire surface of the base plate 212, thereby efficiently and uniformly heating the humidity test piece, shortening the preheating time, and improving testing efficiency. Of course, this solution is not limited to this; in other embodiments, the base plate 212 can also be made of copper.

[0030] Optionally, the first heating component 240 is configured as a thermoelectric cooler, with its hot end in contact with the base plate 212. The core advantage of the thermoelectric cooler lies in its thermoelectric effect. By adjusting the magnitude and direction of the input current, the heat generation power of its hot end can be precisely and quickly controlled, and it can even switch to cooling mode instantly. This allows the test system to not only quickly heat up to the set value, but also actively cool down after the test, or perform high and low temperature cycle tests, greatly improving the flexibility of the test process and the coverage of test scenarios. Secondly, the thermoelectric cooler (TEC) is an all-solid-state device with no moving parts or fluid medium. Its structure is very compact, directly attached to the bottom of the base plate 212, and the connection is reliable. This design avoids the risks of heating wire aging and heat pipe leakage, has a long service life, low maintenance requirements, and significantly enhances the long-term operational reliability of the entire test equipment. Of course, this solution is not limited to this; in other embodiments, the first heating component 240 can also be configured as a thin-film heater, a hot runner, etc.

[0031] Reference Figure 11 and Figure 12 Furthermore, the mounting base 210 also includes a support frame 213, which is located at the bottom of the base plate 212. The support frame 213 has a mounting cavity, in which the first heating component 240 is located. The support frame 213 has a vent 213a corresponding to the cold end of the thermoelectric cooler. It is understood that when the thermoelectric cooler (TEC) is working, its cold end continuously generates a large amount of waste heat. The vent 213a on the support frame 213 directly provides a forced air convection cooling channel for the cold end, effectively dissipating waste heat and preventing the cold end temperature from accumulating and rising. This is an absolutely necessary condition for maintaining the TEC's large temperature difference, high efficiency, and ensuring its long-term reliability. Moreover, the mounting cavity integrates the TEC's heat sink and other components into a robust support frame 213 structure, forming an independent "heating module." This protects the TEC from external impacts or interference and makes the overall structure more compact and neat, facilitating installation, debugging, and maintenance as a whole.

[0032] Reference Figure 5In one embodiment, the waterproofing test further includes a second heating component 150, which heats the test chamber 100. It is understood that if the gas being tested is extracted from the humidity test sample and flows through a chamber wall or pipe with a temperature lower than its dew point, the water vapor will condense into liquid water. This results in a reduction in the actual water content of the gas, and the condensate may adhere to or drip, interfering with the humidity sensor 400. The second heating component 150 maintains the test chamber 100 (especially the detection section 122 and its connecting cavities) at a temperature higher than the gas dew point, completely eliminating cold walls and allowing water vapor escaping from the humidity test sample to be transmitted to the humidity sensor 400 in gaseous form without damage, ensuring the physical integrity of the gas sample being tested. Furthermore, heating keeps the gas in a uniform and stable temperature field throughout the detection section 122. This avoids unpredictable humidity dynamics caused by localized low temperatures (such as intermittent condensation and evaporation), ensuring that the humidity value detected by the humidity sensor 400 accurately and stably reflects the amount of water vapor leaking from the humidity test piece, rather than a distorted value affected by uncontrollable condensation effects.

[0033] In this embodiment, the second heating component 150 is configured as a thermoelectric cooler, with its hot end in contact with the wall of the test chamber 100. The core advantage of the thermoelectric cooler lies in its thermoelectric effect. By adjusting the magnitude and direction of the input current, the heat generation power of its hot end can be precisely and quickly controlled, and it can even switch to cooling mode instantly. This allows the test system to not only quickly heat up to the set value, but also actively cool down after the test, or perform high and low temperature cycle tests, greatly improving the flexibility of the test process and the coverage of test scenarios. Secondly, the thermoelectric cooler (TEC) is a completely solid-state device with no moving parts or fluid medium. Its structure is very compact, directly attached to the bottom of the base plate 212, and the connection is reliable. This design avoids risks such as heating wire aging and heat pipe leakage, has a long service life, low maintenance requirements, and significantly enhances the long-term operational reliability of the entire test equipment. Of course, this solution is not limited to this; in other embodiments, the second heating component 150 can also be configured as a thin-film heater, a hot runner, etc.

[0034] Furthermore, the walls of the test chamber 100 are made of copper, as copper is a metal with excellent thermal conductivity. When the second heating component 150 operates, heat can be rapidly and evenly transferred to the entire inner surface of the test chamber 100 through the copper walls. This greatly reduces temperature differences between different areas within the chamber, effectively preventing moisture condensation caused by localized "cold spots," and ensuring that the entire air path from the humidity test piece to the humidity sensor 400 is in a stable temperature environment above the dew point. The high thermal conductivity of copper makes the temperature regulation of the heating system more sensitive. When heating is needed, heat can diffuse rapidly; when stabilization is needed, the temperature is easier to maintain uniformly. This not only shortens the preheating and equilibration time before testing and improves testing efficiency, but also makes temperature control more precise and energy-efficient. Of course, this solution is not limited to this; in other embodiments, the walls of the test chamber 100 can also be made of aluminum.

[0035] Reference Figure 5 ,and Figures 8 to 10 Optionally, the detection chamber 120 includes an air inlet section 121 and a detection section 122 that are connected to each other. The waterproof testing device also includes a first control valve 310, which is used to close or open the connection port 211b between the air inlet section 121 and the detection section 122. The first control valve 310 acts as a "gate" between the air inlet section 121 and the detection section 122, allowing the two core processes of "air intake preparation" and "detection and monitoring" to be separated in time and space. This avoids continuous interference of the air intake airflow with the stable monitoring environment within the detection section 122. Moreover, during the detection phase, closing the first control valve 310 can create a relatively closed monitoring environment in the detection section 122. At this time, moisture will be confined to the accumulation within the detection section 122 and will not escape or be rapidly diluted by the airflow in the air inlet section 121. This significantly improves the sensitivity and accuracy of the humidity sensor 400 in detecting minute leaks, providing a reliable data basis for determining whether the product is leaking and the magnitude of the leak rate. In addition, after the test is completed, the connection port 211b between the air intake section 121 and the test section 122 can be closed to prevent impurities (water vapor, dust) in the environment from entering the test section 122 through the air intake section 121.

[0036] In one embodiment, the waterproof testing equipment further includes a second control valve 320, which is used to close or open the connection port 211b between the vacuum extraction port and the detection section 122. It can be understood that during the critical leak detection phase, the first control valve 310 (isolating the air inlet section 121) and the second control valve 320 (isolating the vacuum system) can be closed simultaneously, making the detection section 122 a completely sealed static chamber. This completely eliminates external airflow disturbances, ensuring that any trace moisture escaping from the moisture test piece can accumulate in the chamber and be accurately captured by the sensor, greatly improving the sensitivity and accuracy of detecting minute leaks. After the detection phase ends, opening the second control valve 320 can quickly remove the test gas containing leaked moisture from the detection section 122. This is more efficient and thorough than simply relying on natural diffusion or positive pressure discharge, quickly restoring the detection section 122 to its initial dry or baseline state, preparing it for the next test, significantly shortening the test cycle and improving the equipment throughput. Closing this valve during the testing phase when evacuation is not required isolates equipment such as vacuum pumps from the testing section 122. This prevents the continuous operation or vibration of the vacuum pump from interfering with the sensitive pressure / humidity environment within the testing section 122, while also reducing the ineffective operating time of the vacuum system, thus saving energy and protecting the equipment.

[0037] In addition, the second control valve 320 works in conjunction with the first control valve 310 to control the opening and closing sequence of the two valves through a program, which can flexibly combine various test procedures, such as "gas filling-pressure holding test-vacuum reset" or "micro positive pressure test-micro negative pressure test", so that the equipment can adapt to a wider range of test standards and product requirements.

[0038] Reference Figure 10 Furthermore, the test chamber 100 is also provided with an air intake control chamber 130 and a vacuum control chamber 140. The air intake section 121 is connected to the detection section 122 through the air intake control chamber 130. The first control valve 310 includes a first driving member 311 and a first sealing member 312 drivenly connected to the first driving member 311. The first sealing member 312 is disposed in the air intake control chamber 130 and is used to open or close the communication port 211b between the air intake section 121 and the detection section 122. The vacuum extraction port is connected to the detection section 122 through the vacuum control chamber 140. The second control valve 320 includes a second driving member 321 and a second sealing member 322 drivenly connected to the second driving member 321. The second sealing member 322 is disposed in the vacuum control chamber 140 and is used to close or open the communication port 211b between the vacuum control chamber 140 and the detection section 122.

[0039] By configuring the first control valve 310, which controls the opening or closing of the connection port 211b between the air intake section 121 and the detection section 122, and the second control valve 320, which controls the opening or closing of the connection port 211b between the vacuum control chamber 140 and the detection section 122, as a driving element and a sealing element respectively, the technical solution achieves the opening and closing control of the connection port 211b between the air intake section 121 and the detection section 122, and the connection port 211b between the vacuum control chamber 140 and the detection section 122, respectively, through a valve body structure in which the driving element directly controls the sealing element. This design eliminates the need for lubricating oil to lubricate the sealing element, thereby avoiding the potential influence of lubricating oil on the humidity value inside the detection chamber 120 and improving the reliability and accuracy of the equipment in humidity detection.

[0040] The intake section 121 has a first communication port 121a communicating with the intake control chamber 130, and the detection section 122 has a second communication port 122a communicating with the intake control chamber 130. The first sealing member 312 is used to block or open at least one of the first communication port 121a and the second communication port 122a; and / or, the detection section 122 has a third communication port 122b communicating with the vacuum control chamber 140, and the vacuum extraction port has a fourth communication port 123a communicating with the vacuum control chamber 140. The second sealing member 322 is used to block or open at least one of the third communication port 122b and the fourth communication port 123a.

[0041] In this embodiment, the detection chamber 120 is provided with a suction section 123, the vacuum control chamber 140 is connected to the vacuum suction port through the suction section 123, and the fourth connection port 123a is provided between the vacuum control chamber 140 and the suction section 123.

[0042] The first seal 312 is used to block or open the first connecting port 121a and the second connecting port 122a, and the second seal 322 is used to block or open the third connecting port 122b and the fourth connecting port 123a. That is, this solution utilizes a single first seal 312 and / or second seal 322 to simultaneously control the opening and closing of these two connecting ports 211b, forming a series sealing structure. Its core effect is to provide double sealing protection, significantly improving sealing reliability: when the second seal 322 actuates to block airflow, even if there are slight defects in its sealing of the third connecting port 122b, it can still simultaneously block the fourth connecting port 123a, thus forming two barriers between the air intake section 121 and the detection section 122. This design effectively reduces the stringent requirements for the machining and fitting precision of a single sealing surface, enhances the system's resistance to seal wear or minor leaks during long-term use, and fundamentally ensures the isolation and stability of the pressure and humidity environment within the detection section 122 during testing.

[0043] Reference Figures 8 to 10 In one embodiment, the first sealing member 312 includes a first push rod 312a and a first sealing gasket 312b disposed at the free end of the first push rod 312a. The first push rod 312a is movably disposed within the air intake control chamber 130, and the first sealing gasket 312b is used to block or open the first communication port 121a and the second communication port 122a. And / or, the second sealing member 322 includes a second push rod 322a and a second sealing gasket 322b disposed at the free end of the second push rod 322a. The second push rod 322a is movably disposed within the air intake control chamber 130, and the second sealing gasket 322b is used to block or open the third communication port 122b and the fourth communication port 123a. Of course, this solution is not limited to this. In other embodiments, the first sealing member 312 can also be configured as a sealing block, with the driving member drivingly connected to the sealing block; and / or, the second sealing member 322 can also be configured as a sealing block, with the driving member drivingly connected to the sealing block. The first sealing element 312 includes a first push rod 312a and a first sealing gasket 312b disposed at the free end of the first push rod 312a. The first push rod 312a is movably disposed within the air intake control chamber 130, and the first sealing gasket 312b is used to block or open the first communication port 121a and the second communication port 122a. Specifically, the first sealing element 312 is designed as a first push rod 312a and a first sealing gasket 312b at its end, which can move within the air intake control chamber 130, thus optimizing both function and structure. This structure integrates driving, transmission, and sealing functions: the push rod is responsible for transmitting driving force and guiding, while the first sealing gasket 312b at the end is specifically for sealing. This division of labor allows the push rod to use a rigid material to meet strength requirements, while the first sealing gasket 312b can be made of an elastic material to ensure fit, thereby simplifying the mechanical structure while ensuring both the reliability of the action and the effectiveness of the seal. Furthermore, the sealing gasket, as a consumable component, is independently located at the end of the first push rod 312a. When it wears or ages, there is no need to replace the entire first seal 312, making maintenance more convenient. At the same time, the clamping force of the sealing gasket can be easily fine-tuned by adjusting the stroke of the drive component to optimize the sealing effect.

[0044] The second seal 322 includes a second push rod 322a and a second sealing gasket 322b disposed at the free end of the second push rod 322a. The second push rod 322a is movably disposed within the air intake control chamber 130, and the second sealing gasket 322b is used to block or open the third communication port 122b and the fourth communication port 123a. Specifically, the second seal 322 is designed as a second push rod 322a and a second sealing gasket 322b at its end, which can move within the vacuum control chamber 140, thus optimizing both function and structure. This structure integrates driving, transmission, and sealing functions: the second push rod 322a is responsible for transmitting driving force and guiding, while the first sealing gasket 312b at its end is specifically for sealing. This division of labor allows the second push rod 322a to be made of rigid material to meet strength requirements, while the second sealing gasket 322b can be made of elastic material to ensure fit, thereby simplifying the mechanical structure while ensuring both operational reliability and sealing effectiveness. Furthermore, the sealing gasket, as a consumable component, is independently located at the end of the second push rod 322a. When it wears or ages, there is no need to replace the entire second seal 322, making maintenance more convenient. At the same time, the clamping force of the sealing gasket can be easily fine-tuned by adjusting the stroke of the drive component to optimize the sealing effect.

[0045] In one embodiment, a first sealing ring 313 is provided between the first push rod 312a and the cavity wall of the air intake control chamber 130; a second sealing ring 323 is provided between the second push rod 322a and the cavity wall of the vacuum control chamber 140.

[0046] A first sealing ring 313 is provided between the first push rod 312a and the cavity wall of the air intake control chamber 130. This can improve the sealing between the air intake control chamber 130 and the first push rod 312a, prevent gas from diffusing out of the test chamber 100 from the gap between the air intake control chamber 130 and the first push rod 312a, and thus improve the accuracy and reliability of the humidity detection results of the equipment.

[0047] A second sealing ring 323 is provided between the second push rod 322a and the cavity wall of the vacuum control cavity 140. This can improve the sealing between the vacuum control cavity 140 and the second push rod 322a, prevent gas from diffusing out of the test chamber 100 from the gap between the vacuum control cavity 140 and the second push rod 322a, and thus improve the accuracy and reliability of the humidity detection results of the equipment.

[0048] In one embodiment, multiple first sealing rings 313 are spaced apart circumferentially along the first push rod 312a; multiple second sealing rings 323 are spaced apart circumferentially along the second push rod 322a. This can further improve the sealing between the air intake control chamber 130 and the first push rod 312a, as well as between the vacuum control chamber 140 and the second push rod 322a, thereby further improving the accuracy and reliability of the humidity detection results of the equipment.

[0049] Optionally, the first control valve 310 further includes a first floating joint 314, through which the first drive member 311 is connected to the first seal 312; the second control valve 320 further includes a second floating joint 324, through which the second drive member 321 is connected to the second seal 322. During long-term operation or when machining or assembly errors exist, the output shaft of the drive member and the axis of the push rod may be difficult to maintain absolute concentricity. The floating joint can automatically compensate for minor deviations in the radial, axial, and angular directions, converting the output of the drive member into pure axial thrust, thereby eliminating lateral forces and bending moments caused by misalignment. This ensures that the linear movement of the seal within the intake control chamber 130 is always smooth, fundamentally avoiding the risk of push rod jamming, gasket wear, and other malfunctions. Because the floating joint can absorb errors, the requirements for the installation accuracy of the drive member, the guiding accuracy of the push rod, and the coaxiality of the holes of various related parts can be correspondingly relaxed. This reduces the difficulty and cost of machining and assembly, and improves the manufacturability and consistency of the product. Of course, this solution is not limited to this. In other embodiments, the first driving member 311 is directly connected to the first sealing member 312, and the second driving member 321 is directly connected to the second sealing member 322.

[0050] In one embodiment, the first drive element 311 and the second drive element 321 are configured as cylinders. The cylinder outputs linear motion, which is completely consistent with the linear reciprocating motion required by the valve seal. No additional motion conversion mechanism (such as converting rotation to linear motion) is needed, resulting in direct and efficient transmission and a simple and reliable structure. Furthermore, the cylinder's rapid action enables quick valve opening and closing, which helps shorten auxiliary time in the testing cycle (such as pressure build-up and pressure relief stages) and improves testing efficiency. Its control logic is simple; typically, only switching the air path via a solenoid valve is needed to achieve two-position control of "open" and "closed," perfectly matching the on / off valve control requirements of the equipment and simplifying the control system. Of course, this solution is not limited to this; in other embodiments, the first drive element 311 and the second drive element 321 can also be configured as linear motors.

[0051] In one embodiment, the width w of the detection chamber 120 is in the range of 1mm ≤ w ≤ 4mm. This allows trace amounts of moisture leaking from the humidity test piece to accumulate more quickly within the limited space, enabling the humidity sensor 400 to detect concentration changes more sensitively and rapidly. This significantly improves the detection capability for minute humidity levels and shortens the time required to reach a stable reading. Furthermore, the narrow flow channel facilitates smooth laminar flow of gas, reducing turbulence and eddies. This ensures that the gas state (flow rate, mixing uniformity) flowing through the humidity sensor 400 is stable and predictable, avoiding noise interference from airflow disturbances on instantaneous humidity readings, thereby improving measurement consistency and reliability. In addition, the smaller space allows the second heating component 150 to heat the entire detection chamber 120 to the target temperature more quickly and uniformly. This effectively eliminates temperature gradients ("cold spots") within the chamber, ensuring that all flowing gas is in a uniform temperature field above the dew point, fundamentally preventing condensation and guaranteeing the accuracy of humidity measurements.

[0052] Furthermore, in this embodiment, the width w of the detection cavity 120 is 2mm.

[0053] In one embodiment, the heating range of the first heating component 240 is 50°C-75°C. Under vacuum conditions, the saturated vapor pressure of moisture inside and on the surface of the humidity test piece decreases, and the boiling point drops significantly. The additional heating at 50°C-75°C further accelerates the evaporation and diffusion of moisture, allowing trace amounts of moisture that would otherwise be difficult to escape under normal temperature and pressure to be more effectively converted into a gaseous state, thus being captured by the detection system. This greatly improves the detection sensitivity for extremely small amounts of moisture.

[0054] Secondly, the lower temperature limit (50°C) ensures sufficient heat energy to promote complete moisture vaporization under vacuum conditions; the upper temperature limit (75°C) strictly avoids risks that may arise from excessively high temperatures, including thermal deformation, performance damage, or even burnout of the humidity test piece (especially products containing plastics, adhesives, etc.), while also preventing the test piece itself from releasing interfering volatiles at high temperatures that could affect the test results. Furthermore, this temperature range, combined with vacuum conditions, creates an accelerated, controllable, and non-destructive excitation environment for humidity detection. It ensures that leaked moisture can be expelled at a stable rate, while the entire system (including the test piece and sensor environment) does not undergo uncontrollable physical or chemical changes due to overheating, thus guaranteeing the accuracy and repeatability of the test data and the safety of the product itself.

[0055] Reference Figure 6In one embodiment, a vacuum sensor 500 is also provided inside the detection chamber 120; the real-time pressure data provided by the vacuum sensor 500 can serve as a feedback signal for the control system. Based on this, the system can automatically determine whether the vacuuming stage is complete and whether the vacuum level is stable during the pressure holding detection stage. This achieves a qualitative leap from "open-loop execution of the evacuation step" to "closed-loop achievement and maintenance of the target vacuum level," ensuring that each test is conducted under identical vacuum conditions, greatly improving the repeatability and comparability of the test results.

[0056] Furthermore, during the testing phase, changes in the readings of the vacuum sensor 500 can be used to aid in judgment. Besides moisture escaping from the humidity test piece causing changes in the humidity sensor 400 reading, abnormal changes in vacuum can also indicate the presence of other leakage paths (such as a sealing failure in the test chamber 100 itself). This provides important parameters for the equipment's condition monitoring and fault diagnosis.

[0057] Reference Figure 1 and Figure 2 Optionally, the waterproof testing equipment further includes a first protective shell 160 and a second protective shell 170. The first protective shell 160 is used to cover the test chamber 100 and the vacuum structure 600, and the second protective shell 170 is used to cover the stage mechanism 200. It can be understood that the first protective shell 160, by covering the test chamber 100 and the vacuum structure 600 (which may include pumps, valves, etc.) as a whole, can effectively isolate the potential impact of external airflow disturbances, ambient temperature fluctuations, dust contamination, and operator body heat radiation on the precision measurement environment. Simultaneously, it can also isolate vibrations generated by vacuum pumps to a certain extent, creating a more stable and clean local microenvironment for humidity and vacuum sensors, which is beneficial to ensuring the accuracy of test data. The "test core," which includes the precision measurement and pneumatic systems such as the test chamber 100 and vacuum structure 600, is separately enclosed from the "operating area," which includes moving and load-bearing components such as the stage mechanism 200. The test chamber 100 and vacuum structure 600 have high sealing requirements, while the stage mechanism 200 requires the disassembly and assembly of humidity test components. Therefore, separate enclosures avoid frequent disassembly and assembly of humidity test components, which could affect the sealing performance of the vacuum structure 600 and test chamber 100, thus increasing the reliability of the test results. Secondly, this also creates clear functional zoning physically. This isolation confines the risks of different areas (such as electrical risks, motion risks, and negative pressure risks) within their respective enclosures, avoiding mutual interference and significantly improving the overall safety of the equipment.

[0058] Furthermore, the split protective structure ensures that the two functional modules do not interfere with each other during maintenance. For example, when maintaining or adjusting the stage mechanism 200, it is not necessary to open or affect the internal core test chamber and vacuum pipeline, reducing maintenance complexity and reflecting the modular design concept of the equipment.

[0059] Reference Figure 1 , Figure 11 and Figure 12 In one embodiment, the humidity test piece has a first sidewall with the air outlet, and the platform mechanism 200 further includes a simulated plug 230 disposed on the mounting base 210. The simulated plug 230 has a sealing sidewall with the same shape as the first sidewall, and the sealing sidewall is used to close the air inlet 110.

[0060] It is understandable that by setting a simulated plug 230 on the mounting base 210 for installing the humidity test piece, and setting a simulated sidewall 231 on the simulated plug 230 with the same shape as the first sidewall of the humidity test piece, the simulated sidewall 231 of the simulated plug 230 can be used to seal the air intake 110 of the test chamber 100 when the waterproof testing equipment is not in use. Compared with the traditional solution of adding a control valve at the air intake 110, this design has the following advantages: On the one hand, compared with the solution of setting a control valve at the air intake 110, it can prevent dust and other foreign objects from entering the air intake 110 and adhering to the side of the air intake 110 that mates with the first sidewall, thereby avoiding the impact of contamination on the fitting accuracy between the first sidewall and the air intake 110, ensuring reliable sealing between the first sidewall and the air intake 110 during testing, and thus improving the accuracy of the test data. On the other hand, it can prevent free moisture in the environment from entering the air intake 110 and the detection chamber 120, thereby reducing the interference of external humidity on the test results from the source and improving the accuracy and reliability of the test data.

[0061] Furthermore, the suction nozzle 110 is sealed using a simulated plug 230 on the stage mechanism 200, reducing the complexity of the structure for closing the suction nozzle 110. This solution only requires adding a simulated plug 230 to the stage mechanism 200 to seal the suction nozzle 110 when the waterproof testing equipment is no longer in use. The structure is simple and helps to reduce manufacturing costs.

[0062] Optionally, the driving assembly 220 includes an up-and-down driving structure 221, which is driven to the mounting base 210 to drive the mounting base 210 to move in the up-and-down direction. It can be understood that through linear driving in the up-and-down direction, the lifting stroke of the mounting base 210 can be precisely controlled, ensuring that the first sidewall of the simulation plug 230 or the humidity test piece can be perpendicularly aligned with and uniformly pressed against the end face of the suction nozzle 110. This linear motion helps to form a stable and reliable sealing interface, reducing the risk of leakage due to skewness or misalignment, thereby ensuring the consistency and repeatability of test conditions. Of course, the driving method of the present invention is not limited to this. In other feasible embodiments, the driving assembly 220 may also include a rotary driving structure, which is driven to the mounting base 210 to drive the mounting base 210 to rotate about an axis. By rotating, the mounting base 210 can switch the position of the simulated plug 230 on it with the humidity test piece, thereby allowing the simulated sidewall 231 or the first sidewall to be used to seal the air intake 110 as needed, further improving the flexibility and automation of the equipment.

[0063] The up-and-down drive assembly 220 can typically be implemented using linear actuators such as lead screw modules, cylinders, or electric push rods, resulting in a direct transmission path and a simple and reliable structure. Compared to motion schemes with multiple degrees of freedom or complex trajectories, this design is easier to control, debug, and maintain, helping to reduce the overall complexity and manufacturing cost of the equipment.

[0064] Furthermore, the simulated sidewall 231 and the port 211b are located on the same side of the mounting base 210. It can be understood that the simulated sidewall 231 (used to block the suction nozzle 110 when protecting the detection chamber 120) and the port 211b (used for the first sidewall to engage with the suction nozzle 110 during testing) being located on the same side of the mounting base 210 allows the port 211b or the simulated sidewall 231 to be aligned with the fixed suction nozzle 110 sequentially when the mounting base 210 moves in a single direction. This achieves a natural switching between testing and protection states without the need for additional adjustments or complex conversion mechanisms, improving the continuity and efficiency of equipment operation. Moreover, placing the simulated sidewall 231 and the port 211b on the same side of the mounting base 210 allows the drive assembly 220 to be driven in a single direction, enabling switching between different functions. This significantly simplifies the overall configuration of the mounting base 210, reducing the number of parts, lowering processing and assembly complexity, and thus reducing costs. Furthermore, this design allows the mounting base 210 to naturally switch between two functional states based on its travel height during vertical movement. This "lifting and lowering" linkage design makes the switching between the test state and the equipment protection state a natural result of a single vertical movement, with clear logic and reliable operation.

[0065] Furthermore, the simulated plug 230 is located at the bottom of the limiting groove 211a. Specifically, when the mounting base 210 is in the low position, the first sidewall of the humidity test piece located in the limiting groove 211a can be connected to the suction nozzle 110 for testing. At this time, the air outlet on the first sidewall is connected to the air intake 112 of the suction nozzle 110. When the mounting base 210 rises to the high position, the simulated plug 230 located at the bottom of the limiting groove 211a rises to the connection position to block the suction nozzle 110. It can be understood that this layout can avoid the simulated plug 230 interfering with the installation of the humidity test piece. In addition, integrating the simulated plug 230 below the limiting groove 211a makes full use of the space in the thickness direction of the mounting base 210, avoiding the need to increase the structural width in the horizontal direction or set up an independent protective station. This compact stacked layout significantly improves the space utilization efficiency of the platform mechanism 200, which helps to miniaturize and integrate the overall structure of the equipment. Of course, the driving method of the present invention is not limited to this. In other feasible embodiments, the simulated plug 230 can also be located on the top side of the limiting groove 211a, in which case an opening for taking out and putting in that communicating with the limiting groove 211a can be opened on the side of the mounting base 210.

[0066] In other embodiments, the mounting base 210 has a first side and a second side arranged adjacent to each other. The first side faces the air intake 110, the through-hole 211b is located on the first side, and the simulated plug 230 is located on the second side. In this case, the driving assembly 220 should include a rotary driving structure. The rotary driving structure is driven to the mounting base 210 to drive the mounting base 210 to rotate around an axis. Thus, the first side or the second side can be used to face the air intake 110 as needed. Then, the simulated sidewall 231 or the first sidewall can be used to block the air intake 110 as needed.

[0067] Optionally, the drive assembly 220 includes a front-rear drive structure 222, which is driven to the mounting base 210 to move the mounting base 210 in the front-rear direction toward the air intake nozzle 110. The up-down drive structure 221 is driven to the front-rear drive structure 222. Through the combined movement of the front-rear and up-down drives, the mounting base 210 can be flexibly adjusted in position and orientation in three-dimensional space. This allows the simulation plug 230 or the humidity test piece to be finely adjusted in the front-rear direction, thereby more accurately aligning with the air intake nozzle 110, compensating for positional deviations caused by machining, assembly, or dimensional tolerances of the test piece itself, ensuring that the mating sealing surfaces can fit evenly and tightly, and significantly improving sealing reliability. In complex testing or protection processes, multi-axis linkage can plan a better motion path. For example, when installing or replacing the humidity test piece, the mounting base 210 can first be moved out of the work area by the front-rear drive for easy operation; after it is in place, it can then be mated by the up-down drive. This "avoid first, then dock" sequence avoids spatial interference and improves operational safety and convenience. Furthermore, the front and rear drive structures 222 enable the device to adjust its docking position horizontally. This allows the same device to adapt to humidity test pieces of different models, sizes, or outlet positions without requiring hardware replacement or complex mechanical adjustments, significantly enhancing the device's versatility and application range. Of course, the driving method of this invention is not limited to this. In other feasible embodiments, the drive assembly 220 includes a lateral drive structure, which is driven to the mounting base 210 to drive the mounting base 210 to move laterally toward the intake nozzle 110, and the upper and lower drive structures 221 are driven to the lateral drive structure.

[0068] The front and rear drive structures 222 can typically be implemented using linear actuators such as lead screw modules, cylinders, or electric push rods, resulting in a direct transmission path and a simple and reliable structure. Compared to motion schemes with multiple degrees of freedom or complex trajectories, this design is easier to control, debug, and maintain, helping to reduce the overall complexity and manufacturing cost of the equipment.

[0069] Reference Figure 3In one embodiment, the suction nozzle 110 is made of a flexible material. When pressed against the simulated sidewall 231 or the first sidewall of the test piece, the flexible suction nozzle 110 can undergo elastic deformation, tightly fitting the microscopic unevenness of the contact surface and effectively filling tiny gaps. This significantly reduces the risk of leakage due to machining tolerances, assembly errors, or surface defects, ensuring the airtightness of the detection chamber 120 during testing, thereby guaranteeing the accuracy of the test results. Flexible contact avoids direct rigid collisions and friction between the first sidewalls of the test piece and the humidity test piece. During repeated docking and sealing operations, it can effectively prevent scratches, indentations, and other damage to the precision mating surfaces of the suction nozzle 110 or the test piece, protecting the integrity of key components and extending the service life of the equipment and the test piece. The flexible material has a certain deformation compensation capability, enabling it to better adapt to the subtle shape differences in curvature, tilt angle, etc., of the first sidewalls of different test pieces, improving the versatility of the equipment and the stability of the test. Of course, this solution is not limited to this. In other embodiments, the air intake nozzle 110 is made of a rigid material, and a flexible contact pad is provided on the end face of the air intake nozzle 110.

[0070] Reference Figure 4 In one embodiment, the end face of the suction nozzle 110 is provided with a groove 111 adapted to the first sidewall. The suction nozzle 110 is also provided with a suction port 112, which communicates with the groove 111. The groove wall of the groove 111 fits against the first sidewall, and the suction port 112 communicates with the outlet. It can be understood that the shape of the groove 111 is adapted to the contour of the first sidewall of the test piece, so that a large surface area can be formed when the two are connected. Compared with planar contact, this three-dimensional fitting groove 111 structure can effectively increase the sealing contact area and reduce the leakage path through shape interlocking, thereby significantly improving the static and dynamic sealing performance at the interface and ensuring that no external gas seeps in or the tested gas leaks during the test. The groove 111 itself constitutes a natural positioning cavity. When the mounting base 210 drives the test piece closer to the suction nozzle 110, the first sidewall can be inserted into the groove 111. This not only reduces the difficulty of precise alignment and improves docking efficiency, but also utilizes the mating surfaces of the sidewalls and groove walls to constrain the test piece in the horizontal direction, enhancing the interface's resistance to disturbance and offset during testing. After docking, the groove 111 and the first sidewall form a local flow channel space pointing towards the air intake 112. This design allows gas flowing out of the test piece's outlet to be quickly guided and drawn into the detection chamber 120, reducing gas retention and diffusion at the interface, reducing the ineffective volume within the test chamber, and improving the response speed and measurement accuracy of humidity detection.

[0071] The present invention also proposes a humidity testing method, wherein the humidity detection method is applied to the above-mentioned waterproof testing equipment, and the humidity testing method includes: S1: Close the suction nozzle 110 and turn on the vacuum structure 600 to evacuate the test chamber 100. S2: Heat the mounting base 210 and the test chamber 100 to the preset temperature; S3: Install the humidity test specimen into the mounting slot and heat it to the preset temperature; S4: Open the air intake 110 and use the humidity sensor 400 to detect the humidity.

[0072] In step S1, the operation of closing the suction nozzle 110 before evacuating is crucial. This ensures that in the initial stage, the vacuum force acts only on the sealed detection chamber 120 itself, which can efficiently remove residual ambient gases (especially general air with unknown humidity) in the chamber, and establish a known, clean and low-background "vacuum-dry" initial environment for subsequent detection, fundamentally reducing background interference.

[0073] In step S2, the mounting base 210 and the test chamber 100 are preheated to a preset temperature before the humidity test component is installed. This "preheating" process has a dual benefit: For test chamber 100: heating can completely vaporize any trace amounts of liquid water that may be adsorbed on the inner wall and inside of the chamber, which is then removed by the vacuum system to further "dry" the chamber.

[0074] For mounting base 210: Preheating mounting base 210 ensures that it is in a thermally stable state at the start of the test. When the test device (DDT) is subsequently installed (S3), the heat transfer time and temperature gradient between the DDT and mounting base 210 can be significantly reduced, allowing the DDT to reach the preset temperature more quickly and uniformly, shortening the time required for the entire system to reach thermal equilibrium, thereby significantly improving the efficiency of a single test.

[0075] Ensuring uniform and controllable test conditions: All heating steps (S2, S3) are directed to the same "preset temperature," ensuring that the humidity test piece, mounting base 210, and test chamber 100 are in a uniform and stable temperature field at the start of the test. This avoids localized condensation or abnormal convection caused by temperature differences in different parts, ensuring that subsequent detected humidity changes are purely due to leakage from the humidity test piece, rather than internal thermal disturbances within the system.

[0076] Step S4 involves opening the suction nozzle 110 and initiating the test only after environmental purification, system preheating, and sample heating are completed. At this point, the test chamber 100 is a stable environment with uniform temperature and a clean background. Once the suction nozzle 110 is opened, any moisture escaping from the humidity test piece will be directly and efficiently guided to the humidity sensor 400. Changes in the sensor readings can more quickly and accurately reflect the true leakage rate, improving detection sensitivity and response speed.

[0077] In summary, this humidity testing method is not simply a list of steps, but a tightly linked and logically rigorous process control flow. Through the orderly operation of "evacuation -> preheating -> equilibration -> testing," it proactively shapes and controls an optimized testing microenvironment. While minimizing external and internal system interference, it accelerates the test preparation process, thereby achieving a synergistic improvement in overall testing accuracy, repeatability, and work efficiency.

[0078] In this embodiment, the preset temperature is 60°C.

[0079] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A waterproof testing device for testing the humidity of a test specimen, characterized in that, include: The test chamber is equipped with an air intake nozzle and a detection chamber, the air intake nozzle and the detection chamber are connected, and the detection chamber is equipped with a humidity sensor; A vacuum structure, wherein the vacuum extraction port of the vacuum structure is connected to the detection chamber; and A stage mechanism includes a mounting base, a first heating component, and a driving component. The mounting base is used to fix the humidity test piece. The first heating component is disposed on the mounting base and is used to heat the humidity test piece. The driving component is drivenly connected to the mounting base to drive the humidity test piece to move closer to or away from the air inlet so that the air outlet of the humidity test piece aligns with the air inlet.

2. The waterproofness testing equipment as described in claim 1, characterized in that, The waterproofing test also includes a second heating component for heating the test chamber.

3. The waterproofness testing equipment as described in claim 2, characterized in that, The walls of the test chamber are made of copper.

4. The waterproofness testing equipment as described in claim 1, characterized in that, The detection chamber includes an air inlet section and a detection section that are connected to each other. The waterproof testing device further includes a first control valve, which is used to close or open the connection between the air inlet section and the detection section; and / or The waterproof testing equipment also includes a second control valve, which is used to close or open the connection between the vacuum extraction port and the testing section.

5. The waterproofness testing equipment as described in claim 1, characterized in that, The width w of the detection cavity is in the range of 1mm≤w≤4mm.

6. The waterproofness testing equipment as described in claim 5, characterized in that, The heating range of the first heating component is 50℃-75℃.

7. The waterproofness testing equipment as described in claim 6, characterized in that, The detection chamber is also equipped with a vacuum sensor.

8. The waterproofness testing equipment as described in claim 1, characterized in that, The waterproof testing equipment also includes a first protective shell and a second protective shell. The first protective shell is used to cover the test chamber and the vacuum structure, and the second protective shell is used to cover the platform mechanism.

9. The waterproofness testing equipment as described in claim 1, characterized in that, The humidity test piece has a first sidewall with the air outlet, and the platform mechanism further includes a simulated plug on the mounting base. The simulated plug has a sealing sidewall with the same shape as the first sidewall, and the sealing sidewall is used to close the air inlet.

10. A humidity testing method, characterized in that, The humidity detection method is applied to the waterproof testing equipment as described in any one of claims 1 to 9, wherein the humidity detection method includes: S1: Close the suction nozzle and turn on the vacuum structure to evacuate the test chamber; S2: Heat the mounting base and test chamber to the preset temperature; S3: Install the humidity test specimen into the mounting slot and heat it to the preset temperature; S4: Open the air intake and use the humidity sensor to detect humidity.

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